A production-readiness audit for software projects, especially projects generated quickly with AI. It checks security, code quality, infrastructure, and testing, then reports findings by severity and repair effort.

Use it to run a project audit and get checklist results, prioritized issues, file-level details when requested, and estimates such as quick fix or significant refactor.

It turns a broad project review into a structured list of risks and missing safeguards. A monorepo, meaning one repository containing multiple applications or services, can be examined as part of the project discovery.

Kascheck — Skill for Claude Code by kastheco/claude-plugins

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add kastheco/claude-plugins --skill kascheck

Clone the repo

git clone --depth 1 https://github.com/kastheco/claude-plugins

Made for: Claude Code.

Or install kascheck, the plugin that ships this one along with the rest of its 1 skill, 1 command.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kastheco/claude-plugins/kascheck/github.svg)](https://agentmods.dev/skills/kastheco/claude-plugins/kascheck)

Your own site

<a href="https://agentmods.dev/skills/kastheco/claude-plugins/kascheck"><img src="https://agentmods.dev/badge/skills/kastheco/claude-plugins/kascheck/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kastheco/claude-plugins/kascheck"><img src="https://agentmods.dev/badge/skills/kastheco/claude-plugins/kascheck.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,704 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00071	$0.02704
Opus 5.5	$0.00028	$0.01082
Sonnet 5.5	$0.00014	$0.00541
Haiku 4.5	$0.00007	$0.00270

Measured 2mo ago against content hash 4f933a433566, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Kascheck scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/kascheck/skills/kascheck/SKILL.md · 380 lines

How it starts

The opening of the file, as written. The whole thing — 380 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Kascheck

Analyze projects (especially vibe-coded/AI-generated) to assess production readiness and identify required remediation work.

Slash Command

/kascheck:audit [path] [--detailed]

path: Local directory path to analyze (defaults to current directory)
--detailed: Include specific file paths, code examples, and remediation steps

Output Format

The audit produces a comprehensive report with three views:

Checklist View: Pass/Warn/Fail for each category
Priority View: Critical/High/Medium/Low issues with remediation
Effort View: Quick fix / Moderate / Significant refactor categorization

Audit Process

Phase 1: Discovery (Subagent)

Spawn an Explore agent to understand the project:

Task("Kascheck: Discover project structure

Analyze this project to understand:
1. Technology stack (languages, frameworks, databases)
2. Project structure (monorepo, single app, microservices)
3. Entry points (main files, routers, handlers)
4. Configuration files present
5. Test file locations
6. Documentation files

Return a structured summary including:
- Primary language(s) and framework(s)
- Architecture pattern detected
- Key directories and their purposes
- Configuration files found
- Test coverage presence

Path: {target_path}", subagent_type="Explore")

Phase 2: Security Audit (Subagent)

Task("Kascheck: Security assessment

Analyze security practices in this {framework} project at {target_path}:

**Authentication & Authorization:**
- [ ] Authentication mechanism present and properly implemented
- [ ] Authorization/RBAC enforced on protected routes
- [ ] Session management secure (HttpOnly, Secure, SameSite cookies)
- [ ] JWT implementation secure (proper signing, expiration, refresh)

**Input Validation:**
- [ ] Request validation on all endpoints
- [ ] SQL injection prevention (parameterized queries/ORM)
- [ ] XSS prevention (output encoding, CSP headers)
- [ ] File upload validation (type, size, content)

**Secrets Management:**
- [ ] No hardcoded secrets in code
- [ ] Environment variables for configuration
- [ ] .env files in .gitignore
- [ ] Secrets not logged or exposed in errors

**API Security:**
- [ ] CORS properly configured (not wildcard in production)
- [ ] Rate limiting implemented
- [ ] Security headers present (HSTS, X-Frame-Options, etc.)
- [ ] HTTPS enforced

**OWASP Top 10 2025 Check:**
- [ ] A01: Broken Access Control
- [ ] A02: Security Misconfiguration
- [ ] A03: Software Supply Chain Failures
- [ ] A04: Cryptographic Failures
- [ ] A05: Injection
- [ ] A06: Insecure Design
- [ ] A07: Identification/Authentication Failures
- [ ] A08: Software/Data Integrity Failures
- [ ] A09: Security Logging/Alerting Failures
- [ ] A10: Mishandling Exceptional Conditions

Reference: references/security-checklist.md

Return findings with severity (CRITICAL/HIGH/MEDIUM/LOW) and specific file locations.", subagent_type="general-purpose")

Read the full file on GitHub · 380 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 380 lines · 71 tokens per session scan A 4f933a433566

Subscribe to this mod's changes

Kascheck is a skill published in the GitHub repository kastheco/claude-plugins (2 stars, last pushed 6mo ago), licensed MIT. It adds 71 tokens to every session and 2,704 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Security Testing

Kascheck next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
Kascheckkastheco/claude-plugins	Skill	2	6mo ago	MIT	A	71	Claude Code
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code

Kascheck

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

Kascheck

Slash Command

Output Format

Audit Process

Phase 1: Discovery (Subagent)

Phase 2: Security Audit (Subagent)

What ships with it

What this file has done since we first saw it

Kascheck compared with skills from other repositories